1、安装apache
  1.1 安装apache

[root@host ~]# yum install httpd httpd-devel

1.2 启动apache服务

[root@host ~]# systemcti start httpd

1.3 设置httpd服务开机启动

[root@host ~]# systemctl enable  httpd

1.4 防火墙设置开启80端口

[root@host ~]# firewall-cmd --permanent --zone=public  --add-service=http
success
[root@host ~]# firewall-cmd --permanent --zone=public  --add-service=https
success
[root@host ~]# firewall-cmd --reload
success

2、安装mysql
  2.1 安装mysql

[root@host ~]# yum install mariadb mariadb-server mariadb-libs mariadb-devel

2.2 开启mysql

[root@host ~]# systemctl start  mariadb 

2.3 设置mysql服务开机启动

[root@host ~]# systemctl enable  mariadb

2.4 数据库安全设置

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none): 
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.

Set root password? [Y/n] y
New password: 
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
 ... Success!s

By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] y
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] n
 ... skipping.

By default, MariaDB comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
 ... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.
Thanks for using MariaDB!

3、安装PHP
  3.1 安装php

[root@host ~]# yum -y install php

3.2 将php与mysql关联
[root@host ~]# yum install php-mysql

3.3 安装常用PHP模块
[root@host ~]# yum install -y php-gd php-ldap php-odbc php-pear php-xml php-xmlrpc php-mbstring php-snmp php-soap curl curl-devel php-bcmath

3.4 重启apache服务器
[root@root ~]# systemctl restart http

现在centos7下lamp环境就已经安装完毕